"The hair is a slightly grunge take on the '60s," Guido told us. "It's a bit '60s with the teasing at the crown, and a bit Brigitte Bardot with the messy bunches of hair." (He used Redken Thickening Lotion 06 Body Builder to give it a matte texture.)

Though the hairstyle looked soft and billowy, it was anything but. "Overusing hair spray has become a bit of a signature here at Prada," Guido explained as he practically hosed the models down with Redken Forceful 23 Super Strength Finishing Spray while smoothing the hair with a comb and blasting it with the heat of a dryer. "We're spraying and molding the hair so it looks like plastic."